The evolutionary beauty of this bird is in the detail though: The white casque, grown like a keratinous helmet, is used as a weapon in dominance disputes, protects the cassowary’s head from the forest underbrush, and is even believed to amplify deep sound—their ‘boom’ is the lowest-frequency bird call on record. Then there’s the five-inch dagger-like claws, the porcupine-esque quills, and the legs that can propel the flightless bird up to seven feet in the air on a single jump.
And yet despite being able to claw, jump and swim, the southern cassowary is endangered, at risk of extinction.
“Cassowaries are remarkable birds, and they’re ancient,” Branden Barber, CEO of non-profit Rainforest Rescue tells me. “But the two biggest threats to cassowaries, other than habitat loss, are cars and dogs. And that’s because people insist on putting roads everywhere and insist on letting their dogs run free, even in a national park.”